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Diffstat (limited to 'drivers/base/cpu.c')
-rw-r--r--drivers/base/cpu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 7c03af7b84a9..27fd775375b0 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -35,6 +35,7 @@ static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribut
struct cpu *cpu = container_of(dev, struct cpu, sysdev);
ssize_t ret;
+ cpu_hotplug_driver_lock();
switch (buf[0]) {
case '0':
ret = cpu_down(cpu->sysdev.id);
@@ -49,6 +50,7 @@ static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribut
default:
ret = -EINVAL;
}
+ cpu_hotplug_driver_unlock();
if (ret >= 0)
ret = count;